html,body{height:100%;overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none}#app{display:flex;flex-direction:column;align-items:center;max-width:540px;margin:0 auto;padding:12px;height:100%}.header{width:100%;display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.title{font-size:2rem;font-weight:800;color:var(--text)}.score-display{display:flex;gap:8px;align-items:center}.score-box{background:var(--score-bg);color:var(--score-text);border-radius:6px;padding:6px 16px;text-align:center;min-width:70px}.score-box .label{font-size:.6rem;text-transform:uppercase;letter-spacing:1px;opacity:.8}.score-box .value{font-size:1.3rem;font-weight:700;font-variant-numeric:tabular-nums}.controls{width:100%;display:flex;gap:8px;margin-bottom:12px}.controls .btn{flex:1}#game-canvas{display:block;border-radius:12px;cursor:crosshair}.disc-queue{display:flex;gap:8px;margin-top:12px;align-items:center}.disc-queue-label{font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px}.queue-disc{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:700;color:#fff}.queue-disc.blank{background:#7f8c8d}.queue-disc:first-of-type{width:42px;height:42px;font-size:1rem;box-shadow:0 2px 6px #0003}.difficulty-list{display:flex;flex-direction:column;gap:8px;margin:16px 0;max-width:320px}.difficulty-option{text-align:left;padding:12px 16px!important;font-size:.95rem!important}.difficulty-option.selected{border-left:3px solid #3498db}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:16px 0;max-width:280px}.stat-item{background:var(--score-bg);border-radius:6px;padding:12px 8px;text-align:center}.stat-value{font-size:1.5rem;font-weight:800;color:var(--score-text)}.stat-label{font-size:.65rem;text-transform:uppercase;letter-spacing:1px;color:var(--score-text);opacity:.8;margin-top:2px}@media(max-height:600px){.title{font-size:1.5rem}.score-box .value{font-size:1rem}.score-box{padding:4px 12px}.controls{margin-bottom:8px}.disc-queue{margin-top:8px}.queue-disc{width:28px;height:28px;font-size:.75rem}.queue-disc:first-of-type{width:34px;height:34px}}@media(orientation:landscape)and (min-width:640px){#app{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;align-items:start;max-width:900px;padding:8px 16px}#game-canvas{grid-column:1;grid-row:1 / span 20;align-self:center}.disc-queue{margin-top:4px}}#tutorial-canvas{display:block;margin:12px auto;border-radius:8px}.tutorial-hint{font-size:.9rem;margin:8px 0 16px;color:var(--text-secondary)}@media(prefers-reduced-motion:reduce){#game-canvas{transition:none}}